Patents by Inventor Tetsuhiro KATO
Tetsuhiro KATO has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11908629Abstract: The present invention provides an electret sheet that has excellent durability against a pressing force that is repetitively applied, that is, excellent compression recovery properties, and can suppress stuffiness even when used by attaching it to the skin of a human body. The electret sheet of the present invention has an air permeability of 10 to 1,000 sec/100 mL. Thus, the electret sheet has excellent durability against a pressing force that is repetitively applied, that is, excellent compression recovery properties, and can suppress stuffiness even when used by attaching it to the skin of a human body.Type: GrantFiled: August 23, 2019Date of Patent: February 20, 2024Assignee: SEKISUI CHEMICAL CO., LTD.Inventors: Tetsuhiro Kato, Nobuto Kamiya, Yasuyuki Shirasaka, Yuuta Katsurayama, Ryousuke Takahashi
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Patent number: 11688563Abstract: The present invention provides an electret sheet that exhibits excellent piezoelectricity even by light stress. The electret sheet of the invention is characterized by including a charged porous sheet, in which the electret sheet has a compressive elastic modulus of 80 to 300 MPa when compressively deformed at 25° C. and a 50% compression stress of 120 to 300 kPa at 25° C., and thus has the excellent piezoelectricity for light stress and exhibits the excellent piezoelectricity even by light stress (0.5N or less) caused by a pulse wave or a breathing.Type: GrantFiled: April 29, 2021Date of Patent: June 27, 2023Assignee: SEKISUI CHEMICAL CO., LTD.Inventors: Tetsuhiro Kato, Nobuto Kamiya, Masahiro Tsuchiya, Yuuta Katsurayama, Yasuyuki Shirasaka
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Patent number: 11264556Abstract: The present invention provides a piezoelectric sensor that has elastic properties in a surface direction thereof, and can smoothly follow stretching of a body to be measured to accurately measure movement of the body to be measured, and detect movement in a surface direction of a surface of the body to be measured on which the piezoelectric sensor is disposed. The piezoelectric sensor of the present invention includes: a piezoelectric sheet including a porous synthetic resin sheet; a signal electrode layer that is layered on a surface of the piezoelectric sheet and contains conductive fine particles and a binder resin having elastic properties; and a ground electrode layer that is layered on another surface of the piezoelectric sheet and contains conductive fine particles and a binder resin having elastic properties.Type: GrantFiled: September 6, 2017Date of Patent: March 1, 2022Assignee: SEKISUI CHEMICAL CO., LTD.Inventors: Nobuto Kamiya, Tetsuhiro Kato, Yuuta Katsurayama, Kazuyoshi Iwane
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Publication number: 20210280770Abstract: The present invention provides a piezoelectric sensor that has elastic properties in a surface direction thereof, and can smoothly follow stretching of a body to be measured to accurately measure movement of the body to be measured, and detect movement in a surface direction of a surface of the body to be measured on which the piezoelectric sensor is disposed. The piezoelectric sensor of the present invention includes: a piezoelectric sheet including a porous synthetic resin sheet; a signal electrode layer that is layered on a surface of the piezoelectric sheet and contains conductive fine particles and a binder resin having elastic properties; and a ground electrode layer that is layered on another surface of the piezoelectric sheet and contains conductive fine particles and a binder resin having elastic properties.Type: ApplicationFiled: September 6, 2017Publication date: September 9, 2021Applicant: SEKISUI CHEMICAL CO., LTD.Inventors: Nobuto KAMIYA, Tetsuhiro KATO, Yuuta KATSURAYAMA, Kazuyoshi IWANE
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Publication number: 20210257165Abstract: The present invention provides an electret sheet that has excellent durability against a pressing force that is repetitively applied, that is, excellent compression recovery properties, and can suppress stuffiness even when used by attaching it to the skin of a human body. The electret sheet of the present invention has an air permeability of 10 to 1,000 sec/100 mL. Thus, the electret sheet has excellent durability against a pressing force that is repetitively applied, that is, excellent compression recovery properties, and can suppress stuffiness even when used by attaching it to the skin of a human body.Type: ApplicationFiled: August 23, 2019Publication date: August 19, 2021Applicant: SEKISUI CHEMICAL CO., LTD.Inventors: Tetsuhiro KATO, Nobuto KAMIYA, Yasuyuki SHIRASAKA, Yuuta KATSURAYAMA, Ryousuke TAKAHASHI
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Publication number: 20210249195Abstract: The present invention provides an electret sheet that exhibits excellent piezoelectricity even by light stress. The electret sheet of the invention is characterized by including a charged porous sheet, in which the electret sheet has a compressive elastic modulus of 80 to 300 MPa when compressively deformed at 25° C. and a 50% compression stress of 120 to 300 kPa at 25° C., and thus has the excellent piezoelectricity for light stress and exhibits the excellent piezoelectricity even by light stress (0.5 N or less) caused by a pulse wave or a breathing.Type: ApplicationFiled: April 29, 2021Publication date: August 12, 2021Applicant: SEKISUI CHEMICAL CO., LTD.Inventors: Tetsuhiro KATO, Nobuto KAMIYA, Masahiro TSUCHIYA, Yuuta KATSURAYAMA, Yasuyuki SHIRASAKA
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Patent number: 11024463Abstract: The present invention provides an electret sheet that exhibits excellent piezoelectricity even by light stress. The electret sheet of the invention is characterized by including a charged porous sheet, in which the electret sheet has a compressive elastic modulus of 80 to 300 MPa when compressively deformed at 25° C. and a 50% compression stress of 120 to 300 kPa at 25° C., and thus has the excellent piezoelectricity for light stress and exhibits the excellent piezoelectricity even by light stress (0.5 N or less) caused by a pulse wave or a breathing.Type: GrantFiled: February 3, 2017Date of Patent: June 1, 2021Assignee: Sekisui Chemical Co., Ltd.Inventors: Tetsuhiro Kato, Nobuto Kamiya, Masahiro Tsuchiya, Yuuta Katsurayama, Yasuyuki Shirasaka
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Patent number: 10978252Abstract: The present invention provides an electret sheet that retains high piezoelectricity under high-temperature condition. The electret sheet of the invention is characterized by including a charged porous sheet, in which the electret sheet has a volume resistivity of 1.0×1015 ?·cm or more at 25° C. and a dielectric breakdown voltage of 7 kV or more at 25° C. The electret sheet preferably having a volume resistivity of 1.0×1014 ?·cm or more at 37° C. and a dielectric breakdown voltage of 7 kV or more at 37° C. retains excellent piezoelectricity even after being left under a high-temperature atmosphere over a long period.Type: GrantFiled: February 3, 2017Date of Patent: April 13, 2021Assignee: SEKISUI CHEMICAL CO., LTD.Inventors: Tetsuhiro Kato, Nobuto Kamiya, Masahiro Tsuchiya, Yuuta Katsurayama, Yasuyuki Shirasaka
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Publication number: 20190156512Abstract: A method for estimating orientation includes: executing a detection process that includes detecting multiple line segments from each of multiple images included in a video image captured by an imaging device; executing an estimation process that includes estimating a first inclination that is an inclination of a line segment that is among the multiple line segments and detected from a central region including a center of an image among the multiple images; and associating the first inclination with a vertical direction in a three-dimensional space to estimate an orientation of the imaging device.Type: ApplicationFiled: November 14, 2018Publication date: May 23, 2019Applicant: FUJITSU LIMITEDInventors: Tetsuhiro KATO, Osafumi NAKAYAMA
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Publication number: 20190136004Abstract: Provided is a heat conductive foam sheet for electronic equipment sufficiently thin and flexible to be suitably used in the interior of electronic equipment and excellent in heat conductivity. A heat conductive foam sheet for electronic equipment containing a heat conductor in an elastomer resin portion constituting the foam sheet, in which the content of the heat conductor relative to 100 parts by mass of the elastomer resin is 100 to 500 parts by mass, the 25% compressive strength of the foam sheet is 200 kPa or less and the thickness thereof is 0.05 to 1 mm.Type: ApplicationFiled: January 3, 2019Publication date: May 9, 2019Inventors: Tetsuhiro KATO, Koji SHIMONISHI, Yukinori KURINO
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Publication number: 20190057816Abstract: The present invention provides an electret sheet that retains high piezoelectricity under high-temperature condition. The electret sheet of the invention is characterized by including a charged porous sheet, in which the electret sheet has a volume resistivity of 1.0×1015 ??cm or more at 25° C. and a dielectric breakdown voltage of 7 kV or more at 25° C. The electret sheet preferably having a volume resistivity of 1.0×1014 ??cm or more at 37° C. and a dielectric breakdown voltage of 7 kV or more at 37° C. retains excellent piezoelectricity even after being left under a high-temperature atmosphere over a long period.Type: ApplicationFiled: February 3, 2017Publication date: February 21, 2019Applicant: SEKISUI CHEMICAL CO., LTD.Inventors: Tetsuhiro KATO, Nobuto KAMIYA, Masahiro TSUCHIYA, Yuuta KATSURAYAMA, Yasuyuki SHIRASAKA
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Patent number: 10207473Abstract: A thermally conductive foam sheet for electronic equipment according to the present invention is a sheet-shaped foam sheet comprising a silicone resin (A), and thermal conductor particles (B) and bubbles dispersed in the silicone resin (A), wherein a content of the thermal conductor particles (B) is 100 to 400 parts by mass based on 100 parts by mass of the silicone resin (A), and the foam sheet further has a 25% compressive strength of 200 kPa or less and a thickness of 0.8 mm or less.Type: GrantFiled: September 30, 2015Date of Patent: February 19, 2019Assignee: SEKISUI CHEMICAL CO., LTD.Inventors: Tetsuhiro Kato, Naoyuki Nagatani
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Publication number: 20190043672Abstract: The present invention provides an electret sheet that exhibits excellent piezoelectricity even by light stress. The electret sheet of the invention is characterized by including a charged porous sheet, in which the electret sheet has a compressive elastic modulus of 80 to 300 MPa when compressively deformed at 25° C. and a 50% compression stress of 120 to 300 kPa at 25° C., and thus has the excellent piezoelectricity for light stress and exhibits the excellent piezoelectricity even by light stress (0.5 N or less) caused by a pulse wave or a breathing.Type: ApplicationFiled: February 3, 2017Publication date: February 7, 2019Applicant: SEKISUI CHEMICAL CO., LTD.Inventors: Tetsuhiro KATO, Nobuto KAMIYA, Masahiro TSUCHIYA, Yuuta KATSURAYAMA, Yasuyuki SHIRASAKA
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Patent number: 9846823Abstract: A traffic lane boundary line extraction apparatus includes: an image-data-acquiring-unit configured to acquire vehicle outside image data captured by a travelling vehicle; a candidate-area-detection-unit configured to detect a candidate area of a traffic lane boundary line from a road surface part of the vehicle outside image data; a road-surface-area-setting-unit configured to set a road surface area corresponding to the candidate area in the road surface part of the vehicle outside image data for each of the candidate area; a luminance-calculation-unit configured to calculate a representative luminance of the candidate area, and a representative luminance of the road surface area; and if a difference between the representative luminance of the candidate area and the representative luminance of the road surface area is greater than a predetermined threshold value, a candidate area evaluation unit configured to evaluate that the candidate area is suitable for the traffic lane boundary line.Type: GrantFiled: May 26, 2015Date of Patent: December 19, 2017Assignee: FUJITSU LIMITEDInventors: Tetsuhiro Kato, Osafumi Nakayama
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Publication number: 20170305106Abstract: A thermally conductive foam sheet for electronic equipment according to the present invention is a sheet-shaped foam sheet comprising a silicone resin (A), and thermal conductor particles (B) and bubbles dispersed in the silicone resin (A), wherein a content of the thermal conductor particles (B) is 100 to 400 parts by mass based on 100 parts by mass of the silicone resin (A), and the foam sheet further has a 25% compressive strength of 200 kPa or less and a thickness of 0.8 mm or less.Type: ApplicationFiled: September 30, 2015Publication date: October 26, 2017Applicant: SEKISUI CHEMICAL CO., LTD.Inventors: Tetsuhiro KATO, Naoyuki NAGATANI
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Patent number: 9600988Abstract: An image processing device includes: a memory; and a processor coupled to the memory and configured to: obtain image data regarding an image captured by an image capture device that moves along with a moving body and of which image capture direction is a certain traveling direction of the moving body, and detect a feature caused by a reflection from features based on information regarding positions of the features in the image data at a time when the moving body has moved in a direction different from the image capture direction.Type: GrantFiled: September 25, 2013Date of Patent: March 21, 2017Assignee: FUJITSU LIMITEDInventors: Tetsuhiro Kato, Osafumi Nakayama
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Publication number: 20170072666Abstract: A thermal conductive laminate for electronic equipment produced by attaching a two-sided adhesive tape to at least one surface of a foam sheet having a 25% compressive strength of 200 kPa or less and a thickness of 0.05 to 1.0 mm, in which the two-sided adhesive tape has a substrate formed of polyethylene terephthalate having a thickness of 2 to 100 ?m.Type: ApplicationFiled: March 27, 2015Publication date: March 16, 2017Applicant: SEKISUI CHEMICAL CO., LTD.Inventors: Tetsuhiro KATO, Koji SHIMONISHI
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Publication number: 20150363668Abstract: A traffic lane boundary line extraction apparatus includes: an image-data-acquiring-unit configured to acquire vehicle outside image data captured by a travelling vehicle; a candidate-area-detection-unit configured to detect a candidate area of a traffic lane boundary line from a road surface part of the vehicle outside image data; a road-surface-area-setting-unit configured to set a road surface area corresponding to the candidate area in the road surface part of the vehicle outside image data for each of the candidate area; a luminance-calculation-unit configured to calculate a representative luminance of the candidate area, and a representative luminance of the road surface area; and if a difference between the representative luminance of the candidate area and the representative luminance of the road surface area is greater than a predetermined threshold value, a candidate area evaluation unit configured to evaluate that the candidate area is suitable for the traffic lane boundary line.Type: ApplicationFiled: May 26, 2015Publication date: December 17, 2015Inventors: Tetsuhiro KATO, Osafumi NAKAYAMA
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Publication number: 20150316332Abstract: Provided is a heat conductive foam sheet for electronic equipment sufficiently thin and flexible to be suitably used in the interior of electronic equipment and excellent in heat conductivity. A heat conductive foam sheet for electronic equipment containing a heat conductor in an elastomer resin portion constituting the foam sheet, in which the content of the heat conductor relative to 100 parts by mass of the elastomer resin is 100 to 500 parts by mass, the 25% compressive strength of the foam sheet is 200 kPa or less and the thickness thereof is 0.05 to 1 mm.Type: ApplicationFiled: August 6, 2013Publication date: November 5, 2015Applicant: SEKISUI CHEMICAL CO., LTD.Inventors: Tetsuhiro KATO, Koji SHIMONISHI, Yukinori KURINO
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Publication number: 20140139673Abstract: An image processing device includes: a memory; and a processor coupled to the memory and configured to: obtain image data regarding an image captured by an image capture device that moves along with a moving body and of which image capture direction is a certain traveling direction of the moving body, and detect a feature caused by a reflection from features based on information regarding positions of the features in the image data at a time when the moving body has moved in a direction different from the image capture direction.Type: ApplicationFiled: September 25, 2013Publication date: May 22, 2014Applicant: FUJITSU LIMITEDInventors: Tetsuhiro KATO, Osafumi NAKAYAMA